I find it interesting how much TextMate has declined. A few years ago, I believe it would have been the #1 response on this list. TextMate 2 these days, in the hands of the community, is truly excellent. The UI and UX has improved tremendously, and it is now free and open source. I imagine it is just too late. Everybody has moved on.
That said, I'm a switcher, too. I got fed up with the vaporware situation and moved to vim full-time a few years ago. I couldn't move back now.
Given that Sublime Text does not look like a Mac app, and that TextMate was a Mac only app that looked very much like a Mac app, I find it to not be 'spiritual successor' in any shape or form. Sublime Text 2 is a cross-platform application. Having said that, Sublime Text has borrowed some good ideas from TextMate, but many editors do that these days.
I totally agree here. Sublime is just an rebound. People will move on.
I think they should converge to Old Editors like Vim/Emacs because Editors like these don't die, they never have. They keep coming back, like a Zombie (Not the best example I could come up with).
But being on Emacs gave me an advantage of persistence. In past I have changed companies, development machines, operating systems and programming languages but never editor. It was always there, available.
That said, I'm a switcher, too. I got fed up with the vaporware situation and moved to vim full-time a few years ago. I couldn't move back now.